If you need to see which options are available for a given job you can just run $MAHOUT_HOME/bin/mahout jobname to see the usage:
$ bin/mahout trainnb Running on hadoop, using /home/user/hadoop/bin/hadoop and HADOOP_CONF_DIR= MAHOUT-JOB: /home/user/mahout/examples/target/mahout-examples-1.0-SNAPSHOT-job.jar 14/03/25 06:24:22 WARN driver.MahoutDriver: No trainnb.props found on classpath, will use command-line arguments only 14/03/25 06:24:23 ERROR common.AbstractJob: No input specified or -Dmapred.input.dir must be provided to specify input directory Usage: [--input <input> --output <output> --labels <labels> --extractLabels --alphaI <alphaI> --trainComplementary --labelIndex <labelIndex> --overwrite --help --tempDir <tempDir> --startPhase <startPhase> --endPhase <endPhase>] Job-Specific Options: --input (-i) input Path to job input directory. --output (-o) output The directory pathname for output. --labels (-l) labels comma-separated list of labels to include in training --extractLabels (-el) Extract the labels from the input --alphaI (-a) alphaI smoothing parameter --trainComplementary (-c) train complementary? --labelIndex (-li) labelIndex The path to store the label index in --overwrite (-ow) If present, overwrite the output directory before running job --help (-h) Print out help --tempDir tempDir Intermediate output directory --startPhase startPhase First phase to run --endPhase endPhase Last phase to run On Tue, Mar 25, 2014 at 3:17 AM, Mahmood Naderan <nt_mahm...@yahoo.com>wrote: > Hi, > What is the correct syntax for this old command? > > mahout trainclassifier -i traininginput -o wikipediamodel -mf 4 -ms 4 > > It seems that trainclassifier is replaced by trainnb but this one has no > -mf option. > > > Regards, > Mahmood